shaft question

I have a 2014 Callaway Big Bertha and 2015 Callaway Great Big Bertha driver. The Big Bertha came with the white Fubuki shaft and the Great Big Bertha came with the black Bassara shaft. I want to swap shafts but the tips are slightly different. Both are the stock shafts that came with the club and have the Callaway adjustable hosel. They each fit in the other but I wanted to make sure that I can use them with either head. Attached is a picture of the shaft tips. The top shaft in black is the Bassara from the Great Big Bertha and the bottom in white is the Fubuki from the Big Bertha.

those will work

the "ball" one was the first version and had breakage issues (it's a plastic piece) which could cause the cogs to fall off when not installed in a head

Alka nailed it, they'll work interchangeably. I've still got some with the old adapter that I plug in from time to time.

Thanks